Wie baute George Elser eine Bombe und ließ sich am Rednerpult Hitlers explodieren? 12 Minuten nachdem Hitler das Hofbräuhaus vorzeitig wegen der Wetterlage verlassen hatte youtu.be/MxIFVFivXKs?is=taInp_V9p8jD8yHs

Schade, dass man heute auch am 81. Todestag von Georg Elser so wenig von diesem mutigen Menschen liest, dem es beinahe gelungen wäre, Adolf Hitler und das NS-Regime zu stoppen. Sein Mut verdient Erinnerung und Anerkennung.

9.4.1945 Georg Elser im KZ Dachau erschossen. Der schwäbische Schreiner hatte 1939 versucht, Hitler zu töten. Er scheiterte knapp. #OTD #Geschichte #Geschichtsunterricht

Another study showing null results of nudges on pre-registered outcomes

Direction of effect and success of publcation: a randomized study has really been done already! Thanks to @floriannaudet.bsky.social for pointing it out jamanetwork.com/journals/jam...

Hitler's NSDAP never gained the support of more than one-third of voters in free and fair elections! Just like far-right leaders today, Hitler came to power because of the collaboration of right-wing elites, who either wanted to "fight off the left" or thought they could play the far right.

Interested in the latest evidence on reproducibility across social and behavioral research? 📑 Don’t miss this opportunity to learn from these researchers and large-scale initiatives shaping the future of open science.

In this issue: The symposium @adam42smith.bsky.social and I co-edited on "Teaching Qualitative Methods in Undergraduate Education" 🎉🎉🎉

Join us in week one! Many great collegues from the CSS department (e.g., @gabriellalapesa.bsky.social, @vigneshwaran-s.bsky.social @sebstier.bsky.social, @ahrabhikat.bsky.social) will be involved!

Friends, you've been submitting great proposals for this project and we're now coming up to capacity. We're closing proposals on April 15th; please send yours in!

Like most self-styled “libertarians”, Döpfner is fascinated by authoritarian politicians and fascist tech bros. One could write a whole PhD on his success and how it reflects the conservatism, parochialism and sexism of German business society.

📣 We're excited that the program for this year’s #GESISfallseminar in Computational Social Science is out & registration is now open! 🗓️ 31 Aug – 29 Sep 2026 📍 GESIS Mannheim or online More info at gesis.org/fallseminar. Full program & registration at t1p.de/FallSeminar2026-Program. @gesis.org

Interesting paper on AI assisted job interviewing. Study finds that "asnchronous interviews" reduce application continuation by 53%. Most qualified are lost, stronger effects for women. Cool, cool, cool papers.ssrn.com/sol3/papers....

One of my favorites paper got published 🤓 It covers a lot of ground and it’s the best summary of my views on misinformation and what to do about it. Give it a read :) 🔓 osf.io/preprints/ps... 👉 doi.org/10.1177/1461...

Quarto 2 is in the making and will allow for collaborative writing/ coding in the web.

Our large-scale multi-analyst project is now out in Nature (@nature.com)! 🚨 Same data, different analysts → different results. Analytical choices matter more than we assume, with implications for robustness in social & behavioral science. www.nature.com/articles/s41...

I wrote up something that's been in my head for a while: psychometric methods alone can't tell us what cognitive tasks and their indicators measure. Correlating indicators across tasks is circular when constructs are defined by those same correlations. osf.io/preprints/ps... 🧵1/3

The first of a 2 part episode on 'Disagreement' in science of Nullius in Verba is out: www.podbean.com/eas/pb-3vw2d... . Why is disagreement and criticism so important in science? Do we need to interact with critics? And is criticism, as Popper wrote, how 'our mind grows and transcends itself'?

1/ Happy to release StatsClaw — an open-source multi-agent workflow for building statistical software with AI. w/ @tianzhuqin.bsky.social Site: statsclaw.ai Paper: bit.ly/statsclaw GitHub: github.com/statsclaw/

I'll join the chorus of people who are not even quite sure what to say about this absolute behemoth of a project, except for YAY! I worked full time on SCORE from 2019-2021 with the COS team, designing and implementing the system for identifying claims in the literature, developing protocols to...

SCORE, a collaboration of 865 researchers, is now released as three papers in Nature, six preprints, and a lot of data (cos.io/score/). SCORE examined repeatability of findings from the social-behavioral sciences and tested whether human and automated methods could predict replicability.

Es lohnt aus vielen Gründen, "OBEN RECHTS" zu lesen. Die lange und gute Analyse von Lukas Haffert über wahlsoziologische "Koalitionsleimer" zwischen AfD und FDP ist besonders ernüchternd. Sozioökonomisch teils unvereinbare Milieus finden sich vereint in ihrer Abneigung und Frustration über …

@nature.com has published three groundbreaking papers on reproducibility, analytical robustness, and replicability across the social sciences. Sincere thanks are due to the many folks who contributed to these projects. It’s painstaking work, and a great service to social science.

🚨 Just shipped a major update to GERDA, the German Election Database. - State elections update: new years + mail-in - 3 new election types: Mayoral, County, European - Municipal elections: 1984-2025 - Meinungsbild public opinion - New website & features german-elections.com

🧵1/ Our first meta-science paper (with 350+ coauthors) is published today in Nature. It presents one of the largest-ever reproducibility projects in economics & political science. Here’s what we found 👇

Celebrate the good news when you have it!

Crazy

7/ The policy impact is striking: reproducibility rises from 29.6% before Data Access and Research Transpareny (DA-RT) to 79.8% after.

4/ Second, conditional on usable data within packages, point estiamtes in 94.4% of the papers are fully reproducible (237/251).

3/ First finding: data availability shows a sharp increase after DA-RT, in both the population (stated) and our sample (verified).

I do think this is a good development, especially if it's coupled with active community engagement to encourage researchers to publish. Moving away from commercial infrastructure was crucial too.

we have a new paper in the April issue of Political Psychology. in this (admittedly quite lovely) new paper, @stephenvaisey.com, @pablobellode.bsky.social and I make a simple point: using panel data to understand belief change is very hard. we highlight an empirical intractability in the process:

Finally here! i've got super high hopes for this new platform especially after earlier T&F experiences-- will keep submitting & others should too, all fingers cross for its success

Open Research Europe is re-launching with a new platform, and broader set of supporters, this fall. It uses the publish-review-curate model. "Publishing will remain completely free for both European Commission-funded researchers and authors from participating countries." home.cern/news/news/ce...

The rise and fall of instrumental variables and twoway fixed effects. From: arxiv.org/abs/2501.06873

Deutschland beteiligt sich an "Open Research Europe" #ORE. Über die Plattform können Wissenschaftler*innen aller deutschen Forschungseinrichtungen ihre Ergebnisse künftig kostenfrei veröffentlichen u. im offenen Verfahren begutachten lassen. Die DFG ist mit der Durchführung beauftragt: sohub.io/rqll

Love it: Registered Report for Measurement Validation

Is this the first Registered Report published by APSR?

The flagship journal of the European Sociological Association, European Societies, makes published articles free for everyone & does not charge authors a publication fee. Authors of quantitative work are required to openly share data & code. No @asanews.bsky.social journal shares all these traits.

"20% of the studies presented causal claims that were not supported by their designs, opening the risk of their results being misinterpreted and their effect sizes being exaggerated [..] exacerbated by a lack of method transparency and construct validity" journals.sagepub.com/doi/abs/10.1...

🚀Introducing 𝐆𝐔𝐈𝐃𝐄-𝐋𝐋𝐌: A reporting checklist for using LLMs in behavioral & social science ✅GUIDE-LLM is a reporting checklist designed by 80+ experts to improve transparency, reproducibility & ethical accountability of LLM-based research 📄 llm-checklist.com

1/n I'm really excited to share this (open access) paper in which we introduce SCORES (Semantic Clustering of Open Responses via Embedding Similarity) - a user-friendly tool to analyze (short) open-response data. journals.sagepub.com/doi/full/10.... With the magical @bpaassen.bsky.social.

Weil das Narrativ der "jungen rechten Männer" sich derart hartnäckig hält - einige Auswertungen aus den repräsentativen Wahlstatistiken der verschiedenen Bundesländer. Spoiler: *IN KEINEM BUNDESLAND DEUTSCHLANDS WÄHLEN 18-24-JÄHRIGE MÄNNER MEHR AfD ALS MÄNNER ZWISCHEN 35 UND 60.*

It’s not just that there is no requirement, but ASA prohibits any requirement. This is why I am no longer an ASA member and won’t serve on ASA journal editorial boards.

Do conjoint/factorial/vignette experiments reflect choices in the real world? Are hypothetical scenarios in the artificial survey context externally valid? Do hypothetical bias, intention-behavior gap and social desirability biases undermine validity? Two cautionary studies on this question:

I'm hiring a postdoc! @goetheuni.bsky.social Focus: CSS, political behavior, political communication & transforming information environments. 📍 Frankfurt | ⏳ 3 years | 📅 Deadline: 14 April 2026 Full job ad here: www.uni-frankfurt.de/48794987/Zen... (search for “political behavior” to find it)

📚 Neue Publikation: für die Neuauflage des Handbuchs #VergleichendePolitikwissenschaft haben @manesweisskircher.bsky.social und ich den Forschungsstand zu #Rechtsaußen kritisch unter die Lupe genommen und bestehende Forschungslücken diskutiert. 👉 link.springer.com/rwe/10.1007/...

Having the chance to visit Gesis Cologne. This is how an office space can look like. And haven't even seen the party roof top yet.

Yes, parliamentary dynamics n the EP differ from those in national parliaments, but no, setting up a chat group with the #farright is not the same as maintaining the domestic cordon sanitaire

Living systematic reviews are an amazing idea, as the evidence keep evolving, so should the review. However, there is a crucial issue to be tackled: how do we build a robust community updating the review over time? Which are the incentives? Which are the "social tools" available?